Retailer Update
Sainsbury’s
Mark Hawker
Head of Engineering,
Property Division
November – Final Copy
Recap – Lux Conference March
•
•
Sainsbury’s operates c.600 supermarkets and c.600 convenience store
Serves about 23m customers every week
•
Under the vision of being “the most trusted retailer where people love to shop and
work” we have a value “respect for the environment”
•
The value is being deployed through a plan called 20x20 with 5 key elements
• We will put all waste to positive use.
• We will make sure all our brand packaging has been reduced by half compared
to 2005
• We will have reduced our operational emissions by 30% absolute and
65%relative compared with 2005
• Through robust water stewardship we will ensure that our supply chain
approach is sustainable in areas of water vulnerability
• We will have worked with our own brand suppliers to reduce carbon emissions
across all of our own brand products by 50% relative.
What’s the Imperative for Sainsbury’s?
•
Electricity, Gas, Water and Refuse
(waste) over half of a store’s cost.
•
Increasing cost of energy
• rising fossil fuel prices
• Instability
• Cost of Carbon
•
•
Recession
•
expect reduced demand so
easing pressure on fuel costs
•
not so – rising affluence of BRIC
countries.
Electricity demand equivalents
• supermarket = 1000 homes,
• convenience store = 100 homes
Energy use in a supermarket
•
Power - Electricity to run
equipment and lighting
•
Thermal - Gas for space
heating and hot water
What Have We Achieved?
Electricty Consumption (kWh)
Progress against CR Target
1.6E+09
- 1.5%
- 2 .7%
1.5E+09
- 2 .8 %
- 2 .4 %
1.4E+09
- 2 .2 %
1.3E+09
1.2E+09
1.1E+09
1E+09
900000000
800000000
700000000
2007/08
2008/09
2009/10
kWh Consumption 07/08 Existing Stores
2010/11
2011/12
2012/13
kWh Consumption New Stores
Absolute energy reductions kwhrs
2012/13 usage was 11.1% below that
of 2007/08 against a 31% increase in
sales floor area
Retail Lighting Design - Ambient
The Kreuthof Curve was shown at
the last conference and showed where
retailers set there ambient lux
levels and lamp temperature.
We are in line with most other retailers
and we target 4000k and a horizontal
average illuminance (Eav) of 650 lux in
daylit stores and 800 lux in stores
with no natural light.
The use of daylight controls allows
Illuminance levels to be lowered to
pre-set thresholds when the required
illuminance levels are satisfied by
natural means.
After all, the most energy efficient light source is one that is not switched on or is
operating at full output when it is not required for it’s intended purpose!
Retail Lighting Design – Natural Daylight
Sainsbury’s install natural daylight systems on new stores
using polycarbonate daylighting panels. The key deciding factors
for us are they occupy the smallest footprint of available options
whilst delivering good light uniformity.
The U value is important but needs to be done for the whole
roof as different systems can occupy widely different areas (3:1).
This is important to us as we have a lot of PV arrays.
Consideration also needs to be given to the robustness of
the system and whether it has an integral mansafe or needs
an independent system. We are achieving a 4 year payback.
Compared Consumption - Lighting
Baseline Store
70,241 ft2 2010
Traditional Lighting
Avg load 150kW
120
100
80
Kings Lynn Store
72,153 ft2 2012
LED Feature + Car Park
Daylight Dimming
Avg Load 97kw
60
40
20
Impact of Strong Daylight
Lighting - Kings Lynn - Kwhrs
Low Hall Lighting - Kwhrs
03/08/2013 18:30
03/08/2013 12:30
03/08/2013 06:30
03/08/2013 00:30
02/08/2013 18:30
02/08/2013 12:30
02/08/2013 06:30
02/08/2013 00:30
01/08/2013 18:30
01/08/2013 12:30
01/08/2013 06:30
01/08/2013 00:30
31/07/2013 18:30
31/07/2013 12:30
31/07/2013 06:30
31/07/2013 00:30
30/07/2013 18:30
30/07/2013 12:30
30/07/2013 06:30
30/07/2013 00:30
29/07/2013 18:30
29/07/2013 12:30
29/07/2013 06:30
29/07/2013 00:30
0
35% Reduction on
lighting or 14% of the
store load.
LED Lighting
LED’s in Freezers 2005
• Efficiency didn’t drop off like
fluorescents with low temperature
• Could be used with PIR’s
• Expensive and poor colour rendition.
LED’s in Fridges 2010
• Colour Rendition improvements
• Cheaper & proven longer life
• Start to use in fridges, counters,
feature lighting and car park lighting
• Leaving Ambient lighting
LED Lighting
We are seeing various ambient fixtures coming onto
the market with projected life cycle of > 65,000hrs with
high colour rendition and good energy efficiency.
We are using ceiling mounted 600 x 600 LED’s as standard
in our convenience stores and LED feature lighting and
achieving a 2 year payback.
We are using LED high bays in our supermarkets (first
stores - Leicester North and Weymouth) giving a 2 year
payback.
New Store - Leek – 100% LED store using Blade System
Sainsbury’s and GE collaborated in the development
of GE’s Linear Lighting modules (“Blade”) to provide
ambient lighting.
In conjunction with linear feature lighting, 600x600
LED panels in offices, LED car park lighting and
LED lighting in all refrigeration this delivered a
62% saving on electrical energy for lighting –
operating the store at 16.9 w/sqm.
Retrofit – Hempstead Valley, Gillingham
Due to its inefficient nature and poor state of repair,
the existing lighting installation was replaced with new
LED lighting as part of the energy efficiency programme.
It included continuous linear LED for ambient lighting
and LED spot lights for accent lighting.
Energy analysis to date has identified that the LED
installation will save 880,000kWhs of electricity per year.
which equates to 60% of the lighting load and 17% of the
store total.
Caution – Take Time to Understand What You Are Buying!
• Sainsbury's have been contacted by 35 new suppliers since March.
• We interview technically new suppliers and check their business cases
and we use our own models to be sure we compare “apples with apples”.
• Warranties – read the small print - with a >65,000 hour warranty we
have seen various “small print” requiring certification which is difficult
to comply with or limitations on usage or failures.
We now have our own warranty as a starting point.
• We check the supply chain for where the equipment is coming from,
the quality control behind it and understand who commercially we are
dealing with.
• If the equipment stacks up technically, commercially with good quality
control and logistics – then do a trial in a non trading environment.
Assess Technically
& Commercially
Validate the Supply
Chain & Quality
Trial & Prove It
Roll out at Scale
Conclusion
• It’s an exciting field to be in at this time – the advancing pace of technology
brings back to mind the times of windows vs. mac and windows / windows 95 / XP
journey. Its important to make sure that you are backing the right horse .
We also need to make sure that the equipment is upgradeable and recyclable.
• Sainsbury’s are seeing the benefits in this technology in being part of the journey to
meeting its sustainability programme both in new developments and for rolling back
into the existing estate.
• Leek and Hempstead Valley have shown us what is possible. We are now on the
journey to make this “business as usual” for us.
• However this a massive growth area for the industry and its important to be able to
distinguish which products meet your exact need.
• THANK YOU…..